I love the idea, great work! Although, I'm not sure if LEGO would support the idea of having humanoid pieces that break the current standard for a LEGO person. However, the only way to get around that would be to increase the size of the set (more expensive) or only have 1 Kerbal in the cockpit...

My first bass was a Squire P-Bass that I've had for about 7 or 8 years. I really don't play it much (or at all) since I've gotten my new bass about 3 years ago but I don't think I'll ever get rid of it. It's not worth enough money to warrant selling and it would be difficult to find a buyer anyway since it's left handed so I'm pretty happy with keeping it as a backup bass. If anything happened to my current bass I'd be upset to not have a backup ready to go! Additionally it's fun to mess around with now and then as a project bass like making a pickguard from a piece of mirrored plexiglass. If you really need the money or the space it's probably not a big deal to sell it but I think I'd regret selling mine in the future.

I learned how to play on my friends right handed bass and forced myself until it was comfortable. It took a lot of practice but I got the hang of it. My parents eventually bought me a lefty squire p-bass and almost as soon as I attempted to play it I was scared that I had made a huge mistake. It was awkward and uncomfortable to play at first. However, I was so worried about upsetting my parents that I stuck to it. After only a couple days it began to feel right (no pun intended) and I was confident that my skills would improve much faster playing my native lefty. I eventually went on to buy a lefty 5-string schecter omen extreme (INCREDIBLE Bass btw) and have never looked back.

That being said, my personal opinion for you is this: If you are already skilled with playing guitar right handed I think it may be easier to stick with a right handed bass. Additionally you'll likely have many more options that are usually cheaper than their lefty counterparts. If you want to continue to play guitar right handed get a right handed bass. However, if you can get your hands on a left handed bass to try out don't dismiss it right away because it will most likely feel foreign at first, though you may get used to it later.

tl:dr
If you are comfortable and skilled playing a right-handed guitar then stick with a right-handed bass but you still should figure out what's most comfortable for you and experiment a little bit.

I loved the different paths you have to take through the dungeons! After so many play throughs of the regular game it was quite the (welcomed) shock to be forced out of the usual routine. Additionally who couldn't love all the cows inside Lord Jabu Jabu!

Congrats to your buddy! I admire his perseverance. But more praise should be aimed at his personal achievements and the minds of the engineers and scientists who made this technology possible... It's not magic.